EP2926987B1 - Intercouches non tissées fabriquées au moyen de polymères à base de nanoparticules polymères - Google Patents

Intercouches non tissées fabriquées au moyen de polymères à base de nanoparticules polymères Download PDF

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Publication number
EP2926987B1
EP2926987B1 EP15151172.2A EP15151172A EP2926987B1 EP 2926987 B1 EP2926987 B1 EP 2926987B1 EP 15151172 A EP15151172 A EP 15151172A EP 2926987 B1 EP2926987 B1 EP 2926987B1
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EP
European Patent Office
Prior art keywords
polymer
nanoparticle
fiber layer
interlayer
nanoparticles
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EP15151172.2A
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German (de)
English (en)
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EP2926987A1 (fr
Inventor
Thomas Karl Tsotsis
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Boeing Co
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Boeing Co
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/673—Including particulate material other than fiber

Definitions

  • the nanoparticle is derivatized by, for example, amination to include amine groups, where amination may be accomplished by nitration followed by reduction, or by nucleophilic substitution of a leaving group by an amine, substituted amine, or protected amine, followed by deprotection as necessary.
  • the nanoparticle can be derivatized by oxidative methods to produce an epoxy, hydroxy group or glycol group using peroxide, or by cleavage of a double bond by for example a metal-mediated oxidation such as a permanganate oxidation to form ketone, aldehyde, or carboxylic acid functional groups.
  • the thread 520 forms a tricot stitch.
  • other stitch patterns can be used including, for example, without limitation, a lock stitch, a chain stitch, etc.
  • the thread 520 can be selected from a variety of suitable materials in various thicknesses including, for example, without limitation, polyesters, phenoxies, polyamides, and copolyamides.
  • FIG. 7 illustrates an enlarged, cross-sectional isometric view of a portion of the composite laminates of FIG. 6A and FIG. 6B .
  • the polymer-nanoparticle-enhanced interlayer 310 is positioned between the two fiber layers 302. This configuration can enhance the strength of the interface between the two fiber layers 302, and thereby increase the fracture toughness and impact resistance of the finished composite part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Ceramic Engineering (AREA)
  • Textile Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)

Claims (14)

  1. Procédé de fabrication d'une structure composite, le procédé comprenant :
    la disposition d'une intercouche améliorée par du polymère et des nanoparticules (310) de manière adjacente à une première couche de fibres (302a), l'intercouche améliorée par du polymère et des nanoparticules comprenant :
    au moins un polymère (304) ; et
    des nanoparticules chimiquement modifiées (306) incluses dans la chaîne principale moléculaire de l'au moins un polymère, les nanoparticules étant chimiquement modifiées pour inclure un ou plusieurs groupes fonctionnels ; et
    la disposition d'une seconde couche de fibres (302b) de manière adjacente à l'intercouche améliorée par du polymère et des nanoparticules,
    caractérisé en ce que l'intercouche améliorée par du polymère et des nanoparticules (310) est produite par :
    mélange d'au moins un monomère avec les nanoparticules chimiquement modifiées ; et
    filage par voie fondue du polymère et des nanoparticules chimiquement modifiées pour former l'intercouche améliorée par du polymère et des nanoparticules,
    dans lequel le polymère est sous forme de fibres thermoplastiques choisies dans le groupe constitué par du polyamide, du polyimide, du polyamideimide, du polyester, du polybutadiène, du polyuréthane, du polypropylène, du polyétherimide, de la polysulfone, de la polyéthersulfone, de la polyphénylsulfone, du poly(sulfure de phénylène), de la polyéthercétone, de la polyétheréthercétone, du polyarylamide, de la polycétone, du polyphtalamide, du poly(oxyde de phénylène), du poly(téréphtalate de butylène) et du d'éthylène),
    dans lequel les nanoparticules ont une taille moyenne de particule en nombre déterminée selon la description inférieure à un micromètre et sont présentes en quantité de 0,001 à 10 % en poids par rapport au poids total de l'intercouche améliorée par du polymère et des nanoparticules.
  2. Procédé selon la revendication 1, comprenant en outre :
    l'imprégnation de la première couche de fibres (302a) et de la seconde couche de fibres (302b) avec de la résine ; et
    le durcissement de la résine pour faire durcir la structure composite.
  3. Procédé selon la revendication 2, dans lequel l'au moins un polymère est sous la forme de fibres thermoplastiques et dans lequel le ou les groupes fonctionnels forment des liaisons avec la résine.
  4. Procédé selon une quelconque revendication précédente, dans lequel les nanoparticules sont choisies dans le groupe constitué par : des nanotubes mono-parois ou multi-parois, du nanographite, du nanographène, des fibres de graphène, des nanoparticules de silice, du noir de carbone, des fibres de carbone et des associations de ceux-ci et dans lequel le ou les groupes fonctionnels sont choisis dans le groupe de groupes fonctionnels constitué par : les groupes aminé, carboxy, hydroxy, époxy, éther, cétone, alcoxy, aryle, aralkyle, lactone, les groupes polymères ou oligomères fonctionnalisés ou des associations de ceux-ci.
  5. Procédé selon une quelconque revendication précédente, dans lequel les nanoparticules chimiquement modifiées (306) sont des nanotubes mono-parois ou multi-parois portant des groupes fonctionnels amine ou carboxy.
  6. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel la disposition d'une intercouche améliorée par du polymère et des nanoparticules (310) de manière adjacente à une première couche de fibres (302a) comprend le chauffage de l'intercouche améliorée par du polymère et des nanoparticules et de la première couche de fibres pour lier par voie fondue l'intercouche améliorée par du polymère et des nanoparticules à la première couche de fibres.
  7. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel la disposition d'une intercouche améliorée par du polymère et des nanoparticules (310) de manière adjacente à une première couche de fibres (302a) comprend le piquage de l'intercouche améliorée par du polymère et des nanoparticules sur la première couche de fibres.
  8. Procédé selon l'une quelconque des revendications 2 à 7, comprenant en outre l'imprégnation de l'intercouche améliorée par du polymère et des nanoparticules (310) avec de la résine et dans lequel l'imprégnation des première et seconde couches de fibres et de l'intercouche améliorée par du polymère et des nanoparticules avec de la résine inclut la pré-imprégnation de l'intercouche améliorée par du polymère et des nanoparticules et de la première couche de fibres avec une première portion de résine et la pré-imprégnation de la seconde couche de fibres avec une seconde portion de résine, avant la disposition de la seconde couche de fibres de manière adjacente à l'intercouche améliorée par du polymère et des nanoparticules.
  9. Structure composite stratifiée, comprenant :
    une première couche de fibres (302a) ;
    une seconde couche de fibres (302b) ; et
    une intercouche améliorée par du polymère et des nanoparticules (310) disposée entre la première couche de fibres et la seconde couche de fibres,
    dans laquelle l'intercouche inclut :
    au moins un polymère (304) ; et
    des nanoparticules chimiquement modifiées (306) incluses dans la chaîne principale moléculaire de l'au moins un polymère, les nanoparticules étant chimiquement modifiées pour inclure un ou plusieurs groupes fonctionnels ;
    de la résine imprégnée dans les première et seconde couches de fibres, caractérisée en ce que
    les nanoparticules chimiquement modifiées (306) sont incluses dans la chaîne principale moléculaire de l'au moins un polymère par mélange d'au moins un monomère avec les nanoparticules chimiquement modifiées (306) ; et filage par voie fondue du polymère et des nanoparticules chimiquement modifiées pour former l'intercouche améliorée par du polymère et des nanoparticules,
    dans laquelle le polymère est sous forme de fibres thermoplastiques choisies dans le groupe constitué par du polyamide, du polyimide, du polyamideimide, du polyester, du polybutadiène, du polyuréthane, du polypropylène, du polyétherimide, de la polysulfone, de la polyéthersulfone, de la polyphénylsulfone, du poly(sulfure de phénylène), de la polyéthercétone, de la polyétheréthercétone, du polyarylamide, de la polycétone, du polyphtalamide, du poly(oxyde de phénylène), du de butylène) et du d'éthylène),
    dans laquelle les nanoparticules ont une taille moyenne de particule en nombre déterminée selon la description inférieure à un micromètre et sont présentes en quantité de 0,001 à 10 % en poids par rapport au poids total de l'intercouche améliorée par du polymère et des nanoparticules.
  10. Structure composite selon la revendication 9, dans laquelle l'au moins un polymère est sous la forme de fibres thermoplastiques et dans laquelle le ou les groupes fonctionnels forment des liaisons avec la résine.
  11. Structure composite selon l'une quelconque des revendications 9 à 10, dans laquelle les nanoparticules sont choisies dans le groupe constitué par : des nanotubes mono-parois ou multi-parois, du nanographite, du nanographène, des fibres de graphène, des nanoparticules de silice, du noir de carbone, une nanofibre de carbone et des associations de ceux-ci.
  12. Structure composite selon l'une quelconque des revendications 9 à 11, dans laquelle le ou les groupes fonctionnels sont choisis dans le groupe de groupes fonctionnels constitué par : les groupes aminé, carboxy, hydroxy, époxy, éther, cétone, alcoxy, aryle, aralkyle, lactone, les groupes polymères ou oligomères fonctionnalisés ou des associations de ceux-ci.
  13. Structure composite selon l'une quelconque des revendications 9 à 12, dans laquelle la première couche de fibres (302a) et la seconde couche de fibres (302b) sont des couches de fibres non tissées et dans laquelle l'intercouche améliorée par du polymère et des nanoparticules (310) est un non-tissé de polymère synthétique.
  14. Structure composite selon l'une quelconque des revendications 9 à 13, dans laquelle l'intercouche améliorée par du polymère et des nanoparticules (310) est : liée par voie fondue à la première couche de fibres (302a) et/ou mécaniquement attachée à la première couche de fibres.
EP15151172.2A 2014-04-02 2015-01-14 Intercouches non tissées fabriquées au moyen de polymères à base de nanoparticules polymères Active EP2926987B1 (fr)

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CA2876785A1 (fr) 2015-10-02
JP7053131B2 (ja) 2022-04-12
AU2015200137B2 (en) 2018-07-26
EP2926987A1 (fr) 2015-10-07
JP2015196378A (ja) 2015-11-09
AU2015200137C1 (en) 2018-10-25

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